<!DOCTYPE html>
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <meta name="viewport"
          content="width=device-width, initial-scale=1.0, user-scalable=0, minimum-scale=1.0, maximum-scale=1.0">
    <meta name="apple-mobile-web-app-capable" content="yes">
    <meta name="apple-mobile-web-app-status-bar-style" content="black">
    <title>html5+css3实现上拉和下拉刷新</title>

    <script type="text/javascript" src="http://statics.webkfa.com/js/iscroll.js"></script>

    <script type="text/javascript">

        var myScroll,
                pullDownEl, pullDownOffset,
                pullUpEl, pullUpOffset,
                generatedCount = 0;

        function pullDownAction() {
            setTimeout(function () {	// <-- Simulate network congestion, remove setTimeout from production!
                var el, li, i;
                el = document.getElementById('thelist');

                for (i = 0; i < 3; i++) {
                    li = document.createElement('li');
                    li.innerText = 'Generated row ' + (++generatedCount);
                    el.insertBefore(li, el.childNodes[0]);
                }

                myScroll.refresh();	// Remember to refresh when contents are loaded (ie: on ajax completion)
            }, 1);	// <-- Simulate network congestion, remove setTimeout from production!
        }

        function pullUpAction() {
            setTimeout(function () {	// <-- Simulate network congestion, remove setTimeout from production!
                var el, li, i;
                el = document.getElementById('thelist');

                for (i = 0; i < 3; i++) {
                    li = document.createElement('li');
                    li.innerText = 'Generated row ' + (++generatedCount);
                    el.appendChild(li, el.childNodes[0]);
                }

                myScroll.refresh();	// Remember to refresh when contents are loaded (ie: on ajax completion)
            }, 1);	// <-- Simulate network congestion, remove setTimeout from production!
        }

        function loaded() {
            pullDownEl = document.getElementById('pullDown');
            pullDownOffset = pullDownEl.offsetHeight;
            pullUpEl = document.getElementById('pullUp');
            pullUpOffset = pullUpEl.offsetHeight;

            myScroll = new iScroll('wrapper', {
                useTransition: true,
                topOffset: pullDownOffset,
                onRefresh: function () {
                    if (pullDownEl.className.match('loading')) {
                        pullDownEl.className = '';
                        pullDownEl.querySelector('.pullDownLabel').innerHTML = 'Pull down to refresh...';
                    } else if (pullUpEl.className.match('loading')) {
                        pullUpEl.className = '';
                        pullUpEl.querySelector('.pullUpLabel').innerHTML = 'Pull up to load more...';
                    }
                },
                onScrollMove: function () {
                    if (this.y > 5 && !pullDownEl.className.match('flip')) {
                        pullDownEl.className = 'flip';
                        pullDownEl.querySelector('.pullDownLabel').innerHTML = 'Release to refresh...';
                        this.minScrollY = 0;
                    } else if (this.y < 5 && pullDownEl.className.match('flip')) {
                        pullDownEl.className = '';
                        pullDownEl.querySelector('.pullDownLabel').innerHTML = 'Pull down to refresh...';
                        this.minScrollY = -pullDownOffset;
                    } else if (this.y < (this.maxScrollY - 5) && !pullUpEl.className.match('flip')) {
                        pullUpEl.className = 'flip';
                        pullUpEl.querySelector('.pullUpLabel').innerHTML = 'Release to refresh...';
                        this.maxScrollY = this.maxScrollY;
                    } else if (this.y > (this.maxScrollY + 5) && pullUpEl.className.match('flip')) {
                        pullUpEl.className = '';
                        pullUpEl.querySelector('.pullUpLabel').innerHTML = 'Pull up to load more...';
                        this.maxScrollY = pullUpOffset;
                    }
                },
                onScrollEnd: function () {
                    if (pullDownEl.className.match('flip')) {
                        pullDownEl.className = 'loading';
                        pullDownEl.querySelector('.pullDownLabel').innerHTML = 'Loading...';
                        pullDownAction();	// Execute custom function (ajax call?)
                    } else if (pullUpEl.className.match('flip')) {
                        pullUpEl.className = 'loading';
                        pullUpEl.querySelector('.pullUpLabel').innerHTML = 'Loading...';
                        pullUpAction();	// Execute custom function (ajax call?)
                    }
                }
            });

            setTimeout(function () {
                document.getElementById('wrapper').style.left = '0';
            }, 800);
        }

        document.addEventListener('touchmove', function (e) {
            e.preventDefault();
        }, false);

        document.addEventListener('DOMContentLoaded', function () {
            setTimeout(loaded, 200);
        }, false);
    </script>

    <style type="text/css" media="all">
        body, ul, li {
            padding: 0;
            margin: 0;
            border: 0;
        }

        body {
            font-size: 12px;
            -webkit-user-select: none;
            -webkit-text-size-adjust: none;
            font-family: helvetica;
        }

        #header {
            position: absolute;
            z-index: 2;
            top: 0;
            left: 0;
            width: 100%;
            height: 45px;
            line-height: 45px;
            background-color: #d51875;
            background-image: -webkit-gradient(linear, 0 0, 0 100%, color-stop(0, #fe96c9), color-stop(0.05, #d51875), color-stop(1, #7b0a2e));
            background-image: -moz-linear-gradient(top, #fe96c9, #d51875 5%, #7b0a2e);
            background-image: -o-linear-gradient(top, #fe96c9, #d51875 5%, #7b0a2e);
            padding: 0;
            color: #eee;
            font-size: 20px;
            text-align: center;
        }

        #header a {
            color: #f3f3f3;
            text-decoration: none;
            font-weight: bold;
            text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.5);
        }

        #footer {
            position: absolute;
            z-index: 2;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 48px;
            background-color: #;
            background-image: -webkit-gradient(linear, 0 0, 0 100%, color-stop(0, #), color-stop(0.02, #), color-stop(1, #));
            background-image: -moz-linear-gradient(top, #, # 2%, #);
            background-image: -o-linear-gradient(top, #, # 2%, #);
            padding: 0;
            border-top: 1px solid #;
        }

        #wrapper {
            position: absolute;
            z-index: 1;
            top: 45px;
            bottom: 48px;
            left: -9px;
            width: 100%;
            background: #aaa;
            overflow: auto;
        }

        #scroller {
            position: absolute;
            z-index: 1;
            /*	-webkit-touch-callout:none;*/
            -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
            width: 100%;
            padding: 0;
        }

        #scroller ul {
            list-style: none;
            padding: 0;
            margin: 0;
            width: 100%;
            text-align: left;
        }

        #scroller li {
            padding: 0 10px;
            height: 40px;
            line-height: 40px;
            border-bottom: 1px solid #ccc;
            border-top: 1px solid #fff;
            background-color: #fafafa;
            font-size: 14px;
        }

        #myFrame {
            position: absolute;
            top: 0;
            left: 0;
        }

        /**
        *
        * Pull down styles
        *
        */
        #pullDown, #pullUp {
            background: #fff;
            height: 40px;
            line-height: 40px;
            padding: 5px 10px;
            border-bottom: 1px solid #ccc;
            font-weight: bold;
            font-size: 14px;
            color: #;
        }

        #pullDown .pullDownIcon, #pullUp .pullUpIcon {
            display: block;
            float: left;
            width: 40px;
            height: 40px;
            background: url(http://statics.webkfa.com/img/pull-icon@2x.png) 0 0 no-repeat;
            -webkit-background-size: 40px 80px;
            background-size: 40px 80px;
            -webkit-transition-property: -webkit-transform;
            -webkit-transition-duration: 250ms;
        }

        #pullDown .pullDownIcon {
            -webkit-transform: rotate(0deg) translateZ(0);
        }

        #pullUp .pullUpIcon {
            -webkit-transform: rotate(-180deg) translateZ(0);
        }

        #pullDown.flip .pullDownIcon {
            -webkit-transform: rotate(-180deg) translateZ(0);
        }

        #pullUp.flip .pullUpIcon {
            -webkit-transform: rotate(0deg) translateZ(0);
        }

        #pullDown.loading .pullDownIcon, #pullUp.loading .pullUpIcon {
            background-position: 0 100%;
            -webkit-transform: rotate(0deg) translateZ(0);
            -webkit-transition-duration: 0ms;

            -webkit-animation-name: loading;
            -webkit-animation-duration: 2s;
            -webkit-animation-iteration-count: infinite;
            -webkit-animation-timing-function: linear;
        }

        @-webkit-keyframes loading {
            from {
                -webkit-transform: rotate(0deg) translateZ(0);
            }
            to {
                -webkit-transform: rotate(360deg) translateZ(0);
            }
        }

    </style>
</head>
<body>

<div id="header"><a href="http://cubiq.org/iscroll">iScroll</a></div>
<div id="wrapper">
    <div id="scroller">
        <div id="pullDown">
            <span class="pullDownIcon"></span><span class="pullDownLabel">Pull down to refresh...</span>
        </div>

        <ul id="thelist">
            <li>Pretty row 1</li>
            <li>Pretty row 2</li>
            <li>Pretty row 3</li>
            <li>Pretty row 4</li>
            <li>Pretty row 5</li>
            <li>Pretty row 6</li>
            <li>Pretty row 7</li>
            <li>Pretty row 8</li>
            <li>Pretty row 9</li>
            <li>Pretty row 10</li>
            <li>Pretty row 11</li>
            <li>Pretty row 12</li>
            <li>Pretty row 13</li>
            <li>Pretty row 14</li>
            <li>Pretty row 15</li>
            <li>Pretty row 16</li>
            <li>Pretty row 17</li>
            <li>Pretty row 18</li>
            <li>Pretty row 19</li>
            <li>Pretty row 20</li>
            <li>Pretty row 21</li>
            <li>Pretty row 22</li>
            <li>Pretty row 23</li>
            <li>Pretty row 24</li>
            <li>Pretty row 25</li>
            <li>Pretty row 26</li>
            <li>Pretty row 27</li>
            <li>Pretty row 28</li>
            <li>Pretty row 29</li>
            <li>Pretty row 30</li>
            <li>Pretty row 31</li>
            <li>Pretty row 32</li>
            <li>Pretty row 33</li>
            <li>Pretty row 34</li>
            <li>Pretty row 35</li>
            <li>Pretty row 36</li>
            <li>Pretty row 37</li>
            <li>Pretty row 38</li>
            <li>Pretty row 39</li>
            <li>Pretty row 40</li>
        </ul>
        <div id="pullUp">
            <span class="pullUpIcon"></span><span class="pullUpLabel">Pull up to refresh...</span>
        </div>
    </div>
</div>
<div id="footer"></div>

</body>
</html>